Psychometric Properties of the Adult Scale of Hostility and Aggression: Reactive/Proactive (A-SHARP) for Individuals with Intellectual Disabilities

dc.contributor.advisorRojahn, Johannes
dc.contributor.authorRick-Betancourt, Brittney
dc.creatorRick-Betancourt, Brittney
dc.date2015-05-01
dc.date.accessioned2015-08-19T12:48:33Z
dc.date.available2015-08-19T12:48:33Z
dc.date.issued2015-08-19
dc.description.abstractBackground: The Adult Scale of Hostility and Aggression: Reactive/Proactive (A-SHARP; Matlock & Aman, 2011) was developed to assess aggressive problem behaviors common in adults with intellectual and developmental disabilities. The 52-item A-SHARP has five subscales (Verbal Aggression, Physical Aggression, Hostile Affect, Covert Aggression, and Bullying) and in addition provides a score on the degree of provocation of the exhibited aggression. Psychometric properties as reported by Matlock and Aman (2014) were very good, yet need to be corroborated. Method: In 2013, staff at a day treatment program for adults with intellectual disabilities completed ratings on the A-SHARP for all their clients (n=194) and the Behavior Problems Inventory-01 (BPI-01; Rojahn et al., 2001). The BPI-01 was also completed in 2008. The Behavior Problems Inventory-Short Form (BPI-S; Rojahn et al., 2012a) was completed in 2012. Results: Internal consistency was excellent for the A-SHARP Problem and Provocation scales (Cronbach α =.96 and .90), ranging from .76 to .93 for the five subscales. As for concurrent validity of the A-SHARP, subscale scores correlated with the 2013 BPI-01 Aggressive/Destructive Behavior frequency and severity ratings from .15 to .68 (Spearman ρ). Furthermore, regression analyses suggest that scores from the 2008 BPI-01 and the 2012 BPI-S predicted scores on the relevant A-SHARP scales. Conclusions: The A-SHARP was found to have acceptable to excellent internal consistency, while evidence for concurrent validity of select A-SHARP subscales was moderate. These findings and their implications for the assessment of aggressive behavior in adults with intellectual and developmental disabilities are discussed.
dc.identifier.urihttps://hdl.handle.net/1920/9795
dc.language.isoen
dc.subjectIntellectual disabilities
dc.subjectAggressive behavior
dc.subjectAggression
dc.subjectAdults
dc.subjectMaladaptive behavior
dc.titlePsychometric Properties of the Adult Scale of Hostility and Aggression: Reactive/Proactive (A-SHARP) for Individuals with Intellectual Disabilities
dc.typeThesis
thesis.degree.disciplinePsychology
thesis.degree.grantorGeorge Mason University
thesis.degree.levelMaster's
thesis.degree.nameMaster of Arts in Psychology

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
RickBetancourt_thesis_2015.pdf
Size:
472.64 KB
Format:
Adobe Portable Document Format
Description:
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description: